Mark,
I used Rust-Oleum for the orange.
The blue is Testors 1211 gloss dark blue.
I painted the car all orange first, then taped off the area I wanted to stay orange, and sprayed the blue over the orange.
I always do a test, with the paint I'm using, on a piece of scrap material.
I have the white vinyl tape on and a coat of clear Future applied.
I don't like Rust-Oleum paint but they had the correct orange for this build. If I'm using hardware store paints I like Krylon best.
The decision on the paint I use usually depends on what I can find in the closest color for the replica builds.
Bob